+method _read_diff_load_commit {fd cparent new_path tline} {
+ if {$fd ne $current_fd} {
+ catch {close $fd}
+ return
+ }
+
+ while {[gets $fd line] >= 0} {
+ if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
+ old_line osz old_size new_line nsz new_size]} {
+
+ if {$osz eq {}} { set old_size 1 }
+ if {$nsz eq {}} { set new_size 1 }
+
+ if {$new_line <= $tline} {
+ if {[expr {$new_line + $new_size}] > $tline} {
+ # Target line within the hunk
+ set line_shift [expr {
+ ($new_size-$old_size)*($tline-$new_line)/$new_size
+ }]
+ } else {
+ set line_shift [expr {$new_size-$old_size}]
+ }
+
+ set r_orig_line [expr {$r_orig_line - $line_shift}]
+ }
+ }
+ }
+
+ if {[eof $fd]} {
+ close $fd;
+ set current_fd {}
+
+ _load_new_commit $this \
+ $cparent \
+ $new_path \
+ [list $r_orig_line]
+ }
+} ifdeleted { catch {close $fd} }
+
+method _show_tooltip {cur_w pos} {
+ if {$tooltip_wm ne {}} {
+ _open_tooltip $this $cur_w
+ } elseif {$tooltip_timer eq {}} {
+ set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
+ }
+}
+
+method _open_tooltip {cur_w} {
+ set tooltip_timer {}
+ set pos_x [winfo pointerx $cur_w]
+ set pos_y [winfo pointery $cur_w]
+ if {[winfo containing $pos_x $pos_y] ne $cur_w} {
+ _hide_tooltip $this
+ return
+ }
+
+ if {$tooltip_wm ne "$cur_w.tooltip"} {
+ _hide_tooltip $this
+
+ set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
+ wm overrideredirect $tooltip_wm 1
+ wm transient $tooltip_wm [winfo toplevel $cur_w]
+ set tooltip_t $tooltip_wm.label
+ text $tooltip_t \
+ -takefocus 0 \
+ -highlightthickness 0 \
+ -relief flat \
+ -borderwidth 0 \
+ -wrap none \
+ -background lightyellow \
+ -foreground black
+ $tooltip_t tag conf section_header -font font_uibold
+ pack $tooltip_t
+ } else {
+ $tooltip_t conf -state normal
+ $tooltip_t delete 0.0 end
+ }
+
+ set pos @[join [list \
+ [expr {$pos_x - [winfo rootx $cur_w]}] \
+ [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
+ set lno [lindex [split [$cur_w index $pos] .] 0]
+ if {$cur_w eq $w_amov} {
+ set dat [lindex $amov_data $lno]
+ set org {}
+ } else {
+ set dat [lindex $asim_data $lno]
+ set org [lindex $amov_data $lno]
+ }
+
+ if {$dat eq {}} {
+ _hide_tooltip $this
+ return
+ }
+
+ set cmit [lindex $dat 0]
+ set tooltip_commit [list $cmit]
+
+ set author_name {}
+ set summary {}
+ set author_time {}
+ catch {set author_name $header($cmit,author)}
+ catch {set summary $header($cmit,summary)}
+ catch {set author_time [format_date $header($cmit,author-time)]}
+
+ $tooltip_t insert end "commit $cmit\n"
+ $tooltip_t insert end "$author_name $author_time\n"
+ $tooltip_t insert end "$summary"
+
+ if {$org ne {} && [lindex $org 0] ne $cmit} {
+ set save [$tooltip_t get 0.0 end]
+ $tooltip_t delete 0.0 end
+
+ set cmit [lindex $org 0]
+ set file [lindex $org 1]
+ lappend tooltip_commit $cmit
+
+ set author_name {}
+ set summary {}
+ set author_time {}
+ catch {set author_name $header($cmit,author)}
+ catch {set summary $header($cmit,summary)}
+ catch {set author_time [format_date $header($cmit,author-time)]}
+
+ $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
+ $tooltip_t insert end "commit $cmit\n"
+ $tooltip_t insert end "$author_name $author_time\n"
+ $tooltip_t insert end "$summary\n"
+
+ if {$file ne $path} {
+ $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
+ $tooltip_t insert end "$file\n"
+ }
+
+ $tooltip_t insert end "\n"
+ $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
+ $tooltip_t insert end $save
+ }
+
+ $tooltip_t conf -state disabled
+ _position_tooltip $this
+
+ # On MacOS raising a window causes it to acquire focus.
+ # Tk 8.5 on MacOS seems to properly support wm transient,
+ # so we can safely counter the effect there.
+ if {$::have_tk85 && [is_MacOSX]} {
+ update
+ if {$w eq {}} {
+ raise .
+ } else {
+ raise $w
+ }
+ }
+}
+
+method _position_tooltip {} {
+ set max_h [lindex [split [$tooltip_t index end] .] 0]
+ set max_w 0
+ for {set i 1} {$i <= $max_h} {incr i} {
+ set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
+ if {$c > $max_w} {set max_w $c}
+ }
+ $tooltip_t conf -width $max_w -height $max_h
+
+ set req_w [winfo reqwidth $tooltip_t]
+ set req_h [winfo reqheight $tooltip_t]
+ set pos_x [expr {[winfo pointerx .] + 5}]
+ set pos_y [expr {[winfo pointery .] + 10}]
+
+ set g "${req_w}x${req_h}"
+ if {$pos_x >= 0} {append g +}
+ append g $pos_x
+ if {$pos_y >= 0} {append g +}
+ append g $pos_y
+
+ wm geometry $tooltip_wm $g
+ if {![is_MacOSX]} {
+ raise $tooltip_wm
+ }
+}
+
+method _hide_tooltip {} {
+ if {$tooltip_wm ne {}} {
+ destroy $tooltip_wm
+ set tooltip_wm {}
+ set tooltip_commit {}
+ }
+ if {$tooltip_timer ne {}} {
+ after cancel $tooltip_timer
+ set tooltip_timer {}
+ }
+}
+
+method _resize {new_height} {
+ set diff [expr {$new_height - $old_height}]
+ if {$diff == 0} return
+
+ set my [expr {[winfo height $w.file_pane] - 25}]
+ set o [$w.file_pane sash coord 0]
+ set ox [lindex $o 0]
+ set oy [expr {[lindex $o 1] + $diff}]
+ if {$oy < 0} {set oy 0}
+ if {$oy > $my} {set oy $my}
+ $w.file_pane sash place 0 $ox $oy
+
+ set old_height $new_height
+}
+